They're nerfing the dispersion, traverse, and camo (although that last part isn't shown on blitzhangar).

The thing was a tad too accurate for such a large gun, had a tad too much camo, and most importantly, had ridiculously good traverse (and a turret too!) for some godforsaken reason. Why the 183 had best in class traverse (beating out TDs like Foch, 263, and 268) was beyond me. Although I was hoping for an even harder traverse nerf (including turret traverse). Now at least it's no longer best in class, but "only" in line with the T110E4.